[mirror_ubuntu-zesty-kernel.git] / drivers / media / radio / radio-zoltrix.c

/* zoltrix radio plus driver for Linux radio support
 * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
 *
 * BUGS
 *  Due to the inconsistency in reading from the signal flags
 *  it is difficult to get an accurate tuned signal.
 *
 *  It seems that the card is not linear to 0 volume. It cuts off
 *  at a low volume, and it is not possible (at least I have not found)
 *  to get fine volume control over the low volume range.
 *
 *  Some code derived from code by Romolo Manfredini
 *				   romolo@bicnet.it
 *
 * 1999-05-06 - (C. van Schaik)
 *	      - Make signal strength and stereo scans
 *		kinder to cpu while in delay
 * 1999-01-05 - (C. van Schaik)
 *	      - Changed tuning to 1/160Mhz accuracy
 *	      - Added stereo support
 *		(card defaults to stereo)
 *		(can explicitly force mono on the card)
 *		(can detect if station is in stereo)
 *	      - Added unmute function
 *	      - Reworked ioctl functions
 * 2002-07-15 - Fix Stereo typo
 *
 * 2006-07-24 - Converted to V4L2 API
 *		by Mauro Carvalho Chehab <mchehab@infradead.org>
 */

#include <linux/module.h>	/* Modules                        */
#include <linux/init.h>		/* Initdata                       */
#include <linux/ioport.h>	/* request_region		  */
#include <linux/delay.h>	/* udelay, msleep                 */
#include <asm/io.h>		/* outb, outb_p                   */
#include <asm/uaccess.h>	/* copy to/from user              */
#include <linux/videodev2.h>	/* kernel radio structs           */
#include <media/v4l2-common.h>

#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)

static struct v4l2_queryctrl radio_qctrl[] = {
	{
		.id            = V4L2_CID_AUDIO_MUTE,
		.name          = "Mute",
		.minimum       = 0,
		.maximum       = 1,
		.default_value = 1,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
	},{
		.id            = V4L2_CID_AUDIO_VOLUME,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 4096,
		.default_value = 0xff,
		.type          = V4L2_CTRL_TYPE_INTEGER,
	}
};

#ifndef CONFIG_RADIO_ZOLTRIX_PORT
#define CONFIG_RADIO_ZOLTRIX_PORT -1
#endif

static int io = CONFIG_RADIO_ZOLTRIX_PORT;
static int radio_nr = -1;

struct zol_device {
	int port;
	int curvol;
	unsigned long curfreq;
	int muted;
	unsigned int stereo;
	struct mutex lock;
};

static int zol_setvol(struct zol_device *dev, int vol)
{
	dev->curvol = vol;
	if (dev->muted)
		return 0;

	mutex_lock(&dev->lock);
	if (vol == 0) {
		outb(0, io);
		outb(0, io);
		inb(io + 3);    /* Zoltrix needs to be read to confirm */
		mutex_unlock(&dev->lock);
		return 0;
	}

	outb(dev->curvol-1, io);
	msleep(10);
	inb(io + 2);
	mutex_unlock(&dev->lock);
	return 0;
}

static void zol_mute(struct zol_device *dev)
{
	dev->muted = 1;
	mutex_lock(&dev->lock);
	outb(0, io);
	outb(0, io);
	inb(io + 3);            /* Zoltrix needs to be read to confirm */
	mutex_unlock(&dev->lock);
}

static void zol_unmute(struct zol_device *dev)
{
	dev->muted = 0;
	zol_setvol(dev, dev->curvol);
}

static int zol_setfreq(struct zol_device *dev, unsigned long freq)
{
	/* tunes the radio to the desired frequency */
	unsigned long long bitmask, f, m;
	unsigned int stereo = dev->stereo;
	int i;

	if (freq == 0)
		return 1;
	m = (freq / 160 - 8800) * 2;
	f = (unsigned long long) m + 0x4d1c;

	bitmask = 0xc480402c10080000ull;
	i = 45;

	mutex_lock(&dev->lock);

	outb(0, io);
	outb(0, io);
	inb(io + 3);            /* Zoltrix needs to be read to confirm */

	outb(0x40, io);
	outb(0xc0, io);

	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
	while (i--) {
		if ((bitmask & 0x8000000000000000ull) != 0) {
			outb(0x80, io);
			udelay(50);
			outb(0x00, io);
			udelay(50);
			outb(0x80, io);
			udelay(50);
		} else {
			outb(0xc0, io);
			udelay(50);
			outb(0x40, io);
			udelay(50);
			outb(0xc0, io);
			udelay(50);
		}
		bitmask *= 2;
	}
	/* termination sequence */
	outb(0x80, io);
	outb(0xc0, io);
	outb(0x40, io);
	udelay(1000);
	inb(io+2);

	udelay(1000);

	if (dev->muted)
	{
		outb(0, io);
		outb(0, io);
		inb(io + 3);
		udelay(1000);
	}

	mutex_unlock(&dev->lock);

	if(!dev->muted)
	{
		zol_setvol(dev, dev->curvol);
	}
	return 0;
}

/* Get signal strength */

static int zol_getsigstr(struct zol_device *dev)
{
	int a, b;

	mutex_lock(&dev->lock);
	outb(0x00, io);         /* This stuff I found to do nothing */
	outb(dev->curvol, io);
	msleep(20);

	a = inb(io);
	msleep(10);
	b = inb(io);

	mutex_unlock(&dev->lock);

	if (a != b)
		return (0);

	if ((a == 0xcf) || (a == 0xdf)  /* I found this out by playing */
		|| (a == 0xef))       /* with a binary scanner on the card io */
		return (1);
	return (0);
}

static int zol_is_stereo (struct zol_device *dev)
{
	int x1, x2;

	mutex_lock(&dev->lock);

	outb(0x00, io);
	outb(dev->curvol, io);
	msleep(20);

	x1 = inb(io);
	msleep(10);
	x2 = inb(io);

	mutex_unlock(&dev->lock);

	if ((x1 == x2) && (x1 == 0xcf))
		return 1;
	return 0;
}

static int zol_do_ioctl(struct inode *inode, struct file *file,
			unsigned int cmd, void *arg)
{
	struct video_device *dev = video_devdata(file);
	struct zol_device *zol = dev->priv;

	switch (cmd) {
		case VIDIOC_QUERYCAP:
		{
			struct v4l2_capability *v = arg;
			memset(v,0,sizeof(*v));
			strlcpy(v->driver, "radio-zoltrix", sizeof (v->driver));
			strlcpy(v->card, "Zoltrix Radio", sizeof (v->card));
			sprintf(v->bus_info,"ISA");
			v->version = RADIO_VERSION;
			v->capabilities = V4L2_CAP_TUNER;

			return 0;
		}
		case VIDIOC_G_TUNER:
		{
			struct v4l2_tuner *v = arg;

			if (v->index > 0)
				return -EINVAL;

			memset(v,0,sizeof(*v));
			strcpy(v->name, "FM");
			v->type = V4L2_TUNER_RADIO;

			v->rangelow=(88*16000);
			v->rangehigh=(108*16000);
			v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
			v->capability=V4L2_TUNER_CAP_LOW;
			if(zol_is_stereo(zol))
				v->audmode = V4L2_TUNER_MODE_STEREO;
			else
				v->audmode = V4L2_TUNER_MODE_MONO;
			v->signal=0xFFFF*zol_getsigstr(zol);

			return 0;
		}
		case VIDIOC_S_TUNER:
		{
			struct v4l2_tuner *v = arg;

			if (v->index > 0)
				return -EINVAL;

			return 0;
		}
		case VIDIOC_S_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			zol->curfreq = f->frequency;
			zol_setfreq(zol, zol->curfreq);
			return 0;
		}
		case VIDIOC_G_FREQUENCY:
		{
			struct v4l2_frequency *f = arg;

			f->type = V4L2_TUNER_RADIO;
			f->frequency = zol->curfreq;

			return 0;
		}
		case VIDIOC_QUERYCTRL:
		{
			struct v4l2_queryctrl *qc = arg;
			int i;

			for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
				if (qc->id && qc->id == radio_qctrl[i].id) {
					memcpy(qc, &(radio_qctrl[i]),
								sizeof(*qc));
					return (0);
				}
			}
			return -EINVAL;
		}
		case VIDIOC_G_CTRL:
		{
			struct v4l2_control *ctrl= arg;

			switch (ctrl->id) {
				case V4L2_CID_AUDIO_MUTE:
					ctrl->value=zol->muted;
					return (0);
				case V4L2_CID_AUDIO_VOLUME:
					ctrl->value=zol->curvol * 4096;
					return (0);
			}
			return -EINVAL;
		}
		case VIDIOC_S_CTRL:
		{
			struct v4l2_control *ctrl= arg;

			switch (ctrl->id) {
				case V4L2_CID_AUDIO_MUTE:
					if (ctrl->value) {
						zol_mute(zol);
					} else {
						zol_unmute(zol);
						zol_setvol(zol,zol->curvol);
					}
					return (0);
				case V4L2_CID_AUDIO_VOLUME:
					zol_setvol(zol,ctrl->value/4096);
					return (0);
			}
			zol->stereo = 1;
			zol_setfreq(zol, zol->curfreq);
#if 0
/* FIXME: Implement stereo/mono switch on V4L2 */
			if (v->mode & VIDEO_SOUND_STEREO) {
				zol->stereo = 1;
				zol_setfreq(zol, zol->curfreq);
			}
			if (v->mode & VIDEO_SOUND_MONO) {
				zol->stereo = 0;
				zol_setfreq(zol, zol->curfreq);
			}
#endif
			return -EINVAL;
		}

		default:
			return v4l_compat_translate_ioctl(inode,file,cmd,arg,
							  zol_do_ioctl);
	}
}

static int zol_ioctl(struct inode *inode, struct file *file,
		     unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, zol_do_ioctl);
}

static struct zol_device zoltrix_unit;

static const struct file_operations zoltrix_fops =
{
	.owner		= THIS_MODULE,
	.open           = video_exclusive_open,
	.release        = video_exclusive_release,
	.ioctl		= zol_ioctl,
	.compat_ioctl	= v4l_compat_ioctl32,
	.llseek         = no_llseek,
};

static struct video_device zoltrix_radio =
{
	.owner		= THIS_MODULE,
	.name		= "Zoltrix Radio Plus",
	.type		= VID_TYPE_TUNER,
	.hardware	= 0,
	.fops           = &zoltrix_fops,
};

static int __init zoltrix_init(void)
{
	if (io == -1) {
		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
		return -EINVAL;
	}
	if ((io != 0x20c) && (io != 0x30c)) {
		printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
		return -ENXIO;
	}

	zoltrix_radio.priv = &zoltrix_unit;
	if (!request_region(io, 2, "zoltrix")) {
		printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
		return -EBUSY;
	}

	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) == -1)
	{
		release_region(io, 2);
		return -EINVAL;
	}
	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");

	mutex_init(&zoltrix_unit.lock);

	/* mute card - prevents noisy bootups */

	/* this ensures that the volume is all the way down  */

	outb(0, io);
	outb(0, io);
	msleep(20);
	inb(io + 3);

	zoltrix_unit.curvol = 0;
	zoltrix_unit.stereo = 1;

	return 0;
}

MODULE_AUTHOR("C.van Schaik");
MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
MODULE_LICENSE("GPL");

module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
module_param(radio_nr, int, 0);

static void __exit zoltrix_cleanup_module(void)
{
	video_unregister_device(&zoltrix_radio);
	release_region(io, 2);
}

module_init(zoltrix_init);
module_exit(zoltrix_cleanup_module);
Commit	Line	Data
1da177e4 LT	1	/* zoltrix radio plus driver for Linux radio support
	2	* (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
	3	*
4286c6f6	4	* BUGS
1da177e4 LT	5	* Due to the inconsistency in reading from the signal flags
	6	* it is difficult to get an accurate tuned signal.
	7	*
	8	* It seems that the card is not linear to 0 volume. It cuts off
	9	* at a low volume, and it is not possible (at least I have not found)
	10	* to get fine volume control over the low volume range.
	11	*
	12	* Some code derived from code by Romolo Manfredini
	13	* romolo@bicnet.it
	14	*
	15	* 1999-05-06 - (C. van Schaik)
	16	* - Make signal strength and stereo scans
4286c6f6	17	* kinder to cpu while in delay
1da177e4 LT	18	* 1999-01-05 - (C. van Schaik)
	19	* - Changed tuning to 1/160Mhz accuracy
	20	* - Added stereo support
	21	* (card defaults to stereo)
	22	* (can explicitly force mono on the card)
	23	* (can detect if station is in stereo)
	24	* - Added unmute function
	25	* - Reworked ioctl functions
	26	* 2002-07-15 - Fix Stereo typo
2ab65299 MCC	27	*
	28	* 2006-07-24 - Converted to V4L2 API
	29	* by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	30	*/
	31
	32	#include <linux/module.h> /* Modules */
	33	#include <linux/init.h> /* Initdata */
fb911ee8	34	#include <linux/ioport.h> /* request_region */
1da177e4 LT	35	#include <linux/delay.h> /* udelay, msleep */
	36	#include <asm/io.h> /* outb, outb_p */
	37	#include <asm/uaccess.h> /* copy to/from user */
2ab65299	38	#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3	39	#include <media/v4l2-common.h>
1da177e4	40
2ab65299 MCC	41	#include <linux/version.h> /* for KERNEL_VERSION MACRO */
	42	#define RADIO_VERSION KERNEL_VERSION(0,0,2)
	43
	44	static struct v4l2_queryctrl radio_qctrl[] = {
	45	{
	46	.id = V4L2_CID_AUDIO_MUTE,
	47	.name = "Mute",
	48	.minimum = 0,
	49	.maximum = 1,
	50	.default_value = 1,
	51	.type = V4L2_CTRL_TYPE_BOOLEAN,
	52	},{
	53	.id = V4L2_CID_AUDIO_VOLUME,
	54	.name = "Volume",
	55	.minimum = 0,
	56	.maximum = 65535,
	57	.step = 4096,
	58	.default_value = 0xff,
	59	.type = V4L2_CTRL_TYPE_INTEGER,
	60	}
	61	};
	62
1da177e4 LT	63	#ifndef CONFIG_RADIO_ZOLTRIX_PORT
	64	#define CONFIG_RADIO_ZOLTRIX_PORT -1
	65	#endif
	66
	67	static int io = CONFIG_RADIO_ZOLTRIX_PORT;
	68	static int radio_nr = -1;
	69
	70	struct zol_device {
	71	int port;
	72	int curvol;
	73	unsigned long curfreq;
	74	int muted;
	75	unsigned int stereo;
3593cab5	76	struct mutex lock;
1da177e4 LT	77	};
	78
	79	static int zol_setvol(struct zol_device *dev, int vol)
	80	{
	81	dev->curvol = vol;
	82	if (dev->muted)
	83	return 0;
	84
3593cab5	85	mutex_lock(&dev->lock);
1da177e4 LT	86	if (vol == 0) {
	87	outb(0, io);
	88	outb(0, io);
	89	inb(io + 3); /* Zoltrix needs to be read to confirm */
3593cab5	90	mutex_unlock(&dev->lock);
1da177e4 LT	91	return 0;
	92	}
	93
	94	outb(dev->curvol-1, io);
	95	msleep(10);
	96	inb(io + 2);
3593cab5	97	mutex_unlock(&dev->lock);
1da177e4 LT	98	return 0;
	99	}
	100
	101	static void zol_mute(struct zol_device *dev)
	102	{
	103	dev->muted = 1;
3593cab5	104	mutex_lock(&dev->lock);
1da177e4 LT	105	outb(0, io);
	106	outb(0, io);
	107	inb(io + 3); /* Zoltrix needs to be read to confirm */
3593cab5	108	mutex_unlock(&dev->lock);
1da177e4 LT	109	}
	110
	111	static void zol_unmute(struct zol_device *dev)
	112	{
	113	dev->muted = 0;
	114	zol_setvol(dev, dev->curvol);
	115	}
	116
	117	static int zol_setfreq(struct zol_device *dev, unsigned long freq)
	118	{
	119	/* tunes the radio to the desired frequency */
	120	unsigned long long bitmask, f, m;
	121	unsigned int stereo = dev->stereo;
	122	int i;
	123
	124	if (freq == 0)
	125	return 1;
	126	m = (freq / 160 - 8800) * 2;
	127	f = (unsigned long long) m + 0x4d1c;
	128
	129	bitmask = 0xc480402c10080000ull;
	130	i = 45;
	131
3593cab5	132	mutex_lock(&dev->lock);
4286c6f6	133
1da177e4 LT	134	outb(0, io);
	135	outb(0, io);
	136	inb(io + 3); /* Zoltrix needs to be read to confirm */
	137
	138	outb(0x40, io);
	139	outb(0xc0, io);
	140
	141	bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ ( stereo << 31));
	142	while (i--) {
	143	if ((bitmask & 0x8000000000000000ull) != 0) {
	144	outb(0x80, io);
	145	udelay(50);
	146	outb(0x00, io);
	147	udelay(50);
	148	outb(0x80, io);
	149	udelay(50);
	150	} else {
	151	outb(0xc0, io);
	152	udelay(50);
	153	outb(0x40, io);
	154	udelay(50);
	155	outb(0xc0, io);
	156	udelay(50);
	157	}
	158	bitmask *= 2;
	159	}
	160	/* termination sequence */
	161	outb(0x80, io);
	162	outb(0xc0, io);
	163	outb(0x40, io);
	164	udelay(1000);
	165	inb(io+2);
	166
4286c6f6 MCC	167	udelay(1000);
4286c6f6 MCC	168
1da177e4 LT	169	if (dev->muted)
	170	{
	171	outb(0, io);
	172	outb(0, io);
	173	inb(io + 3);
	174	udelay(1000);
	175	}
4286c6f6	176
3593cab5	177	mutex_unlock(&dev->lock);
4286c6f6	178
1da177e4 LT	179	if(!dev->muted)
1da177e4 LT	180	{
4286c6f6	181	zol_setvol(dev, dev->curvol);
1da177e4 LT	182	}
	183	return 0;
	184	}
	185
	186	/* Get signal strength */
	187
	188	static int zol_getsigstr(struct zol_device *dev)
	189	{
	190	int a, b;
	191
3593cab5	192	mutex_lock(&dev->lock);
1da177e4 LT	193	outb(0x00, io); /* This stuff I found to do nothing */
	194	outb(dev->curvol, io);
	195	msleep(20);
	196
	197	a = inb(io);
	198	msleep(10);
	199	b = inb(io);
	200
3593cab5	201	mutex_unlock(&dev->lock);
4286c6f6	202
1da177e4 LT	203	if (a != b)
	204	return (0);
	205
4286c6f6	206	if ((a == 0xcf) \|\| (a == 0xdf) /* I found this out by playing */
1da177e4 LT	207	\|\| (a == 0xef)) /* with a binary scanner on the card io */
1da177e4 LT	208	return (1);
4286c6f6	209	return (0);
1da177e4 LT	210	}
	211
	212	static int zol_is_stereo (struct zol_device *dev)
	213	{
	214	int x1, x2;
	215
3593cab5	216	mutex_lock(&dev->lock);
4286c6f6	217
1da177e4 LT	218	outb(0x00, io);
	219	outb(dev->curvol, io);
	220	msleep(20);
	221
	222	x1 = inb(io);
	223	msleep(10);
	224	x2 = inb(io);
	225
3593cab5	226	mutex_unlock(&dev->lock);
4286c6f6	227
1da177e4 LT	228	if ((x1 == x2) && (x1 == 0xcf))
	229	return 1;
	230	return 0;
	231	}
	232
	233	static int zol_do_ioctl(struct inode inode, struct file file,
	234	unsigned int cmd, void *arg)
	235	{
	236	struct video_device *dev = video_devdata(file);
	237	struct zol_device *zol = dev->priv;
	238
	239	switch (cmd) {
2ab65299	240	case VIDIOC_QUERYCAP:
1da177e4	241	{
2ab65299	242	struct v4l2_capability *v = arg;
1da177e4	243	memset(v,0,sizeof(*v));
2ab65299 MCC	244	strlcpy(v->driver, "radio-zoltrix", sizeof (v->driver));
	245	strlcpy(v->card, "Zoltrix Radio", sizeof (v->card));
	246	sprintf(v->bus_info,"ISA");
	247	v->version = RADIO_VERSION;
	248	v->capabilities = V4L2_CAP_TUNER;
	249
1da177e4 LT	250	return 0;
1da177e4 LT	251	}
2ab65299	252	case VIDIOC_G_TUNER:
1da177e4	253	{
2ab65299 MCC	254	struct v4l2_tuner *v = arg;
	255
	256	if (v->index > 0)
1da177e4	257	return -EINVAL;
2ab65299 MCC	258
2ab65299 MCC	259	memset(v,0,sizeof(*v));
1da177e4	260	strcpy(v->name, "FM");
2ab65299 MCC	261	v->type = V4L2_TUNER_RADIO;
	262
	263	v->rangelow=(88*16000);
	264	v->rangehigh=(108*16000);
	265	v->rxsubchans =V4L2_TUNER_SUB_MONO\|V4L2_TUNER_SUB_STEREO;
	266	v->capability=V4L2_TUNER_CAP_LOW;
	267	if(zol_is_stereo(zol))
	268	v->audmode = V4L2_TUNER_MODE_STEREO;
	269	else
	270	v->audmode = V4L2_TUNER_MODE_MONO;
	271	v->signal=0xFFFF*zol_getsigstr(zol);
	272
1da177e4 LT	273	return 0;
1da177e4 LT	274	}
2ab65299	275	case VIDIOC_S_TUNER:
1da177e4	276	{
2ab65299 MCC	277	struct v4l2_tuner *v = arg;
	278
	279	if (v->index > 0)
1da177e4	280	return -EINVAL;
2ab65299	281
1da177e4 LT	282	return 0;
1da177e4 LT	283	}
2ab65299	284	case VIDIOC_S_FREQUENCY:
1da177e4	285	{
2ab65299 MCC	286	struct v4l2_frequency *f = arg;
	287
	288	zol->curfreq = f->frequency;
	289	zol_setfreq(zol, zol->curfreq);
1da177e4 LT	290	return 0;
1da177e4 LT	291	}
2ab65299	292	case VIDIOC_G_FREQUENCY:
1da177e4	293	{
2ab65299	294	struct v4l2_frequency *f = arg;
1da177e4	295
2ab65299 MCC	296	f->type = V4L2_TUNER_RADIO;
2ab65299 MCC	297	f->frequency = zol->curfreq;
1da177e4	298
2ab65299 MCC	299	return 0;
	300	}
	301	case VIDIOC_QUERYCTRL:
	302	{
	303	struct v4l2_queryctrl *qc = arg;
	304	int i;
	305
	306	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
	307	if (qc->id && qc->id == radio_qctrl[i].id) {
	308	memcpy(qc, &(radio_qctrl[i]),
	309	sizeof(*qc));
	310	return (0);
	311	}
	312	}
	313	return -EINVAL;
	314	}
	315	case VIDIOC_G_CTRL:
	316	{
	317	struct v4l2_control *ctrl= arg;
	318
	319	switch (ctrl->id) {
	320	case V4L2_CID_AUDIO_MUTE:
	321	ctrl->value=zol->muted;
	322	return (0);
	323	case V4L2_CID_AUDIO_VOLUME:
	324	ctrl->value=zol->curvol * 4096;
	325	return (0);
	326	}
	327	return -EINVAL;
	328	}
	329	case VIDIOC_S_CTRL:
	330	{
	331	struct v4l2_control *ctrl= arg;
	332
	333	switch (ctrl->id) {
	334	case V4L2_CID_AUDIO_MUTE:
	335	if (ctrl->value) {
	336	zol_mute(zol);
	337	} else {
	338	zol_unmute(zol);
	339	zol_setvol(zol,zol->curvol);
	340	}
	341	return (0);
	342	case V4L2_CID_AUDIO_VOLUME:
	343	zol_setvol(zol,ctrl->value/4096);
	344	return (0);
	345	}
	346	zol->stereo = 1;
	347	zol_setfreq(zol, zol->curfreq);
	348	#if 0
	349	/* FIXME: Implement stereo/mono switch on V4L2 */
1da177e4 LT	350	if (v->mode & VIDEO_SOUND_STEREO) {
	351	zol->stereo = 1;
	352	zol_setfreq(zol, zol->curfreq);
	353	}
	354	if (v->mode & VIDEO_SOUND_MONO) {
	355	zol->stereo = 0;
	356	zol_setfreq(zol, zol->curfreq);
	357	}
2ab65299 MCC	358	#endif
2ab65299 MCC	359	return -EINVAL;
1da177e4	360	}
2ab65299 MCC	361
	362	default:
	363	return v4l_compat_translate_ioctl(inode,file,cmd,arg,
	364	zol_do_ioctl);
1da177e4 LT	365	}
	366	}
	367
	368	static int zol_ioctl(struct inode inode, struct file file,
	369	unsigned int cmd, unsigned long arg)
	370	{
	371	return video_usercopy(inode, file, cmd, arg, zol_do_ioctl);
	372	}
	373
	374	static struct zol_device zoltrix_unit;
	375
fa027c2a	376	static const struct file_operations zoltrix_fops =
1da177e4 LT	377	{
	378	.owner = THIS_MODULE,
	379	.open = video_exclusive_open,
	380	.release = video_exclusive_release,
	381	.ioctl = zol_ioctl,
0d0fbf81	382	.compat_ioctl = v4l_compat_ioctl32,
1da177e4 LT	383	.llseek = no_llseek,
	384	};
	385
	386	static struct video_device zoltrix_radio =
	387	{
	388	.owner = THIS_MODULE,
	389	.name = "Zoltrix Radio Plus",
	390	.type = VID_TYPE_TUNER,
2ab65299	391	.hardware = 0,
1da177e4 LT	392	.fops = &zoltrix_fops,
	393	};
	394
	395	static int __init zoltrix_init(void)
	396	{
	397	if (io == -1) {
	398	printk(KERN_ERR "You must set an I/O address with io=0x???\n");
	399	return -EINVAL;
	400	}
	401	if ((io != 0x20c) && (io != 0x30c)) {
	402	printk(KERN_ERR "zoltrix: invalid port, try 0x20c or 0x30c\n");
	403	return -ENXIO;
	404	}
	405
	406	zoltrix_radio.priv = &zoltrix_unit;
	407	if (!request_region(io, 2, "zoltrix")) {
	408	printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
	409	return -EBUSY;
	410	}
	411
	412	if (video_register_device(&zoltrix_radio, VFL_TYPE_RADIO, radio_nr) == -1)
	413	{
	414	release_region(io, 2);
	415	return -EINVAL;
	416	}
	417	printk(KERN_INFO "Zoltrix Radio Plus card driver.\n");
	418
3593cab5	419	mutex_init(&zoltrix_unit.lock);
4286c6f6	420
1da177e4 LT	421	/* mute card - prevents noisy bootups */
	422
	423	/* this ensures that the volume is all the way down */
	424
	425	outb(0, io);
	426	outb(0, io);
	427	msleep(20);
	428	inb(io + 3);
	429
	430	zoltrix_unit.curvol = 0;
	431	zoltrix_unit.stereo = 1;
	432
	433	return 0;
	434	}
	435
	436	MODULE_AUTHOR("C.van Schaik");
	437	MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
	438	MODULE_LICENSE("GPL");
	439
	440	module_param(io, int, 0);
	441	MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
	442	module_param(radio_nr, int, 0);
	443
	444	static void __exit zoltrix_cleanup_module(void)
	445	{
	446	video_unregister_device(&zoltrix_radio);
	447	release_region(io, 2);
	448	}
	449
	450	module_init(zoltrix_init);
	451	module_exit(zoltrix_cleanup_module);
	452